21132223032 has 16 divisors (see below), whose sum is σ = 52830557640. Its totient is φ = 7044074336.

The previous prime is 21132223019. The next prime is 21132223033. The reversal of 21132223032 is 23032223112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132223033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440254623 + ... + 440254670.

Almost surely, 2^21132223032 is an apocalyptic number.

It is an amenable number.

21132223032 is an abundant number, since it is smaller than the sum of its proper divisors (31698334608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21132223032 is a wasteful number, since it uses less digits than its factorization.

21132223032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880509302 (or 880509298 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21132223032 its reverse (23032223112), we get a palindrome (44164446144).

The spelling of 21132223032 in words is "twenty-one billion, one hundred thirty-two million, two hundred twenty-three thousand, thirty-two".